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Unable to get profiler to connect to IIS - ASP.NET on webserver

Getting a System.IO.IOException: Pipe write operation failed with code 0xe8

Have disabled all antivirus on webserver. 
it feels like a permissions issue or maybe some windows feature is not installed?
any suggestions would be appreciated!

here is the stack:

07 Aug 2023 12:33:03.479 [Profiler pipe monitor] INFO  RedGate.Profiler.Engine.Startup.Basic.PipeConnection - Process ID 0x22a4 'C:\Windows\SysWOW64\inetsrv\w3wp.exe' has connected.

07 Aug 2023 12:33:33.434 [Profiler pipe monitor] WARN  RedGate.Profiler.Engine.Startup.Sessions.BaseSession - Process rejected - no manager available

07 Aug 2023 12:33:33.435 [Profiler pipe monitor] ERROR RedGate.Profiler.Engine.Startup.Basic.PipeConnection - An unexpected error was encountered while trying to send data to the process being profiled.

System.IO.IOException: Pipe write operation failed with code 0xe8
   at RedGate.Profiler.Engine.Startup.Basic.Pipe`1.SendNextMessage()
   at RedGate.Profiler.Engine.Startup.Basic.PipeMessageWriter`1.Send()
   at RedGate.Profiler.Engine.Startup.Basic.PipeConnection`1.ProcessHello(Pipe`1 pipe, IMessage message)

07 Aug 2023 12:33:33.435 [Profiler pipe monitor] ERROR RedGate.Profiler.Engine.Startup.Basic.PipeConnection - Unexpected exception while processing a message.

System.InvalidOperationException: An unexpected error was encountered while trying to send data to the process being profiled. ---> System.IO.IOException: An unexpected error was encountered while trying to send data to the process being profiled. ---> System.IO.IOException: Pipe write operation failed with code 0xe8
   at RedGate.Profiler.Engine.Startup.Basic.Pipe`1.SendNextMessage()
   at RedGate.Profiler.Engine.Startup.Basic.PipeMessageWriter`1.Send()
   at RedGate.Profiler.Engine.Startup.Basic.PipeConnection`1.ProcessHello(Pipe`1 pipe, IMessage message)
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